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(Color online) Experimental scheme for the formation of periodic lattices. (a) Four plane waves interference and (b) propagation of periodic lattices in nonlinear liquid media.
(Color online) Numerical simulations of periodic lattices. (a) Pattern in the input face; (b) output face of dark periodic lattice in 2D is formed (with ); (c) propagation of periodic lattice ellipticlike tilted 135° withrespect axis in a negative nonlinear media; (d) dark periodic lattice in 1D is formed ; and (e) lattice rotated 45° with respect to the axis .
(Color online) Experimental results of a periodic lattice propagation in the nonlinear liquid media. Alcohol with R6G: (a) periodic lattice at the input face and (b) formation of a dark 2D lattice for . Acetone with R6G: (c) diagonal periodic lattice at the input face; (d) 1D lattice for ; and (e) rotation of the periodic lattice with .
(Color online) Experimental results of periodic lattice in nonlinear liquid media in acetone with R6G; (a) periodic lattice in the input face and (b) combination of periodic dark lattice 2D and 1D with .
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